Attacking for Trophies

Since everyone hates logging on to see that they've lost a ridiculous amount of trophies on defense (30+) why doesn't Supercell change the way trophies are given/taken? Ex: anyone can attack anyone else in their league (even champions 3200-4000+) and there is a set amount of trophies that can be lost or gained that is the same throughout the entire league, and changes as you move up in leagues (kind of like loot bonuses)? So someone that is 2399 trophies and attacks and wins against someone with 2200 trophies would get the same amount of trophies as someone at 2200 attacking someone at 2399.